Do not confuse this with Firefox 53 or 54. Those installers will run, then immediately fail with "This is not a valid Win32 application."
Using Firefox 52.9 on Windows XP comes with significant risks that users must acknowledge: download firefox 52.9 for windows xp
“It works,” her father breathed over her shoulder. “You fixed it.” Do not confuse this with Firefox 53 or 54
Firefox (Extended Support Release) was the final version of the browser to support Windows XP and Vista. While it remains available for download, it is no longer supported with security updates and may struggle to load modern websites due to expired security certificates. Download Options While it remains available for download, it is
To get your copy right now: Head to ftp.mozilla.org/pub/firefox/releases/52.9.0esr/win32/ , grab the installer, and breathe one last breath of digital life into your Windows XP machine.
is a rite of passage for retro-computing enthusiasts. It allows your vintage Dell Optiplex or IBM ThinkPad to still talk to the modern internet. However, treat it like a classic car: don't take it on the highway, keep the doors locked, and never enter your credit card information.
Add-on Support: Access to legacy XUL-based extensions that were later disabled in "Firefox Quantum" versions.